function toggleSearchBox()
{
  var simpleString = 'Einfache Suche';
  var extendedString = 'Erweiterte Suche';
  var box = document.getElementById( 'extendedSearchBox' );
  if( box )
  {
    if( 'none' == box.style.display )
    {
      box.style.display = '';
      link = document.getElementById('toggleSearchLink');
      if( link )
      {
        link.innerHTML = simpleString;
        link.title     = simpleString;
      }
    }
    else
    {
      box.style.display = 'none';
      link = document.getElementById('toggleSearchLink');
      if( link )
      {
        link.innerHTML = extendedString;
        link.title     = extendedString;
      }
    }
  }
}